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EMC Legato Cert E20-855

E20-855

Exam Code: E20-855

Exam Name: Networked Storage-SAN Expert for Implementation Engineers

Updated: Oct 06, 2026

Q & A: 114 Questions and Answers

E20-855 Free Demo download:

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E20-855 PDF Price: $119.00  $49.99


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EMC E20-855 Exam Syllabus Topics:

SectionObjectives
Zoning and Fabric Management- Fabric services and management
  • 1. Name Server and login services
    • 2. Fabric login and device discovery
      - Zoning concepts and implementation
      • 1. Single-initiator zoning best practices
        • 2. WWN zoning vs port zoning
          Storage Array Integration- LUN provisioning and mapping
          • 1. LUN masking and access control
            • 2. Host connectivity configuration
              - Multipathing and failover
              • 1. MPIO configuration concepts
                • 2. Path redundancy and load balancing
                  Performance and Troubleshooting- SAN performance analysis
                  • 1. Congestion and bottleneck identification
                    • 2. Latency and throughput considerations
                      - Fault isolation and resolution
                      • 1. Connectivity troubleshooting
                        • 2. Fabric and path failure diagnosis
                          Storage Area Network (SAN) Fundamentals- SAN topology and design principles
                          • 1. Redundancy and high availability concepts
                            • 2. Core-edge and mesh designs
                              - Fibre Channel architecture and components
                              • 1. Switches, directors, and inter-switch links
                                • 2. Host Bus Adapters (HBA) and initiators

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